A retaining wall is a structure designed to hold back soil and prevent erosion on sloped land. These walls are commonly made from materials like concrete, stone, or timber and are used in landscaping, construction, and civil engineering projects. They help create flat areas for gardens, driveways, or buildings by stabilizing the soil behind them. Retaining walls can vary in height and design, depending on the specific needs of a site. They work by using gravity, friction, and drainage systems to manage the pressure exerted by the soil. Properly constructed retaining walls can enhance the safety and aesthetics of a property while preventing soil movement.